CMakeUserUseFlex: Difference between revisions
From KitwarePublic
Jump to navigationJump to search
No edit summary |
(Add explicit preformat markup) |
||
| Line 1: | Line 1: | ||
{{CMake/Template/Header}} | {{CMake/Template/Header}} | ||
<pre> | |||
# - Look for GNU flex, the lexer generator. | # - Look for GNU flex, the lexer generator. | ||
# Defines the following: | # Defines the following: | ||
| Line 47: | Line 48: | ||
ENDMACRO(FLEX_FILE) | ENDMACRO(FLEX_FILE) | ||
ENDIF(FLEX_EXECUTABLE) | ENDIF(FLEX_EXECUTABLE) | ||
</pre> | |||
{{CMake/Template/Footer}} | {{CMake/Template/Footer}} | ||
[[Category:CMakeMacro]] | [[Category:CMakeMacro]] | ||
Revision as of 18:04, 20 April 2018
You are now on the CMake wiki.
Many pages are now DEPRECATED and sometimes even considered bad practice. Those are only kept as reference for previous CMake versions.
The documentations for the latest versions are available here : CMake Documentation.
# - Look for GNU flex, the lexer generator.
# Defines the following:
# FLEX_EXECUTABLE - path to the flex executable
# FLEX_FILE - parse a file with flex
# FLEX_PREFIX_OUTPUTS - Set to true to make FLEX_FILE produce outputs of
# lex.${filename}.c, not lex.yy.c . Passes -P to flex.
IF(NOT DEFINED FLEX_PREFIX_OUTPUTS)
SET(FLEX_PREFIX_OUTPUTS FALSE)
ENDIF(NOT DEFINED FLEX_PREFIX_OUTPUTS)
IF(NOT FLEX_EXECUTABLE)
MESSAGE(STATUS "Looking for flex")
FIND_PROGRAM(FLEX_EXECUTABLE flex)
IF(FLEX_EXECUTABLE)
MESSAGE(STATUS "Looking for flex -- ${FLEX_EXECUTABLE}")
ENDIF(FLEX_EXECUTABLE)
ENDIF(NOT FLEX_EXECUTABLE)
IF(FLEX_EXECUTABLE)
MACRO(FLEX_FILE FILENAME)
GET_FILENAME_COMPONENT(PATH "${FILENAME}" PATH)
IF("${PATH}" STREQUAL "")
SET(PATH_OPT "")
ELSE("${PATH}" STREQUAL "")
SET(PATH_OPT "/${PATH}")
ENDIF("${PATH}" STREQUAL "")
IF(NOT EXISTS "${CMAKE_CURRENT_BINARY_DIR}${PATH_OPT}")
FILE(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}${PATH_OPT}")
ENDIF(NOT EXISTS "${CMAKE_CURRENT_BINARY_DIR}${PATH_OPT}")
IF(FLEX_PREFIX_OUTPUTS)
GET_FILENAME_COMPONENT(PREFIX "${FILENAME}" NAME_WE)
ELSE(FLEX_PREFIX_OUTPUTS)
SET(PREFIX "yy")
ENDIF(FLEX_PREFIX_OUTPUTS)
SET(OUTFILE "${CMAKE_CURRENT_BINARY_DIR}${PATH_OPT}/lex.${PREFIX}.c")
ADD_CUSTOM_COMMAND(
OUTPUT "${OUTFILE}"
COMMAND "${FLEX_EXECUTABLE}"
ARGS "--prefix=${PREFIX}"
"--outfile=${OUTFILE}"
"${CMAKE_CURRENT_SOURCE_DIR}/${FILENAME}"
DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/${FILENAME}")
SET_SOURCE_FILES_PROPERTIES("${OUTFILE}" PROPERTIES GENERATED TRUE)
ENDMACRO(FLEX_FILE)
ENDIF(FLEX_EXECUTABLE)
